WSU Extension

Hortsense

Weeds
 
Annual bluegrass 
Barnyardgrass 
Bentgrass, creeping 
Bermudagrass 
Bittercress (Shotweed, Hairy bittercress) 
Bittersweet nightshade (European bittersweet) 
Black medic 
Blackberry (Himalayan, Evergreen, Pacific) 
Blue mustard (Purple mustard, Tenella mustard) 
Brackenfern, western 
Buffalobur 
Bull thistle 
Buttercup, creeping 
Canada thistle 
Catchweed bedstraw (Cleavers) 
Catsear, common (False dandelion) 
Chickweed, common and mouseear 
Clover 
Comfrey 
Crabgrass 
Dandelion 
Dock (Curly, Broadleaf) 
Dodder 
Downy brome (Cheatgrass, Downy chess) 
Dwarf mistletoes 
English daisy (Lawn daisy) 
English ivy 
Field bindweed (Wild morningglory) 
Field pennycress (Fanweed) 
Flixweed 
Foxtail (Green, Yellow, Bristly) 
Garden loosestrife 
Giant hogweed 
Goldenrods 
Groundsel, common 
Hawkweeds 
Hedge bindweed 
Henbit 
Herb Robert (Robert geranium, stinky Bob) 
Horsetails (Scouringrush) 
Horseweed (Marestail) 
Knapweeds 
Knotweeds (Bohemian, Giant, Japanese, Himalayan) 
Kochia 
Lambsquarters, common 
Liverworts 
Mallow, common (Cheeseweed, Buttonweed) 
Nightshades 
Oxalis (Creeping woodsorrel) 
Parrotfeather and Eurasian watermilfoil 
Pineappleweed 
Plantain (Broadleaf, Buckhorn) 
Poison hemlock 
Poison ivy and Poison oak 
Prickly lettuce (China lettuce) 
Prostrate knotweed 
Puncturevine (Tackweed, Goathead) 
Purple deadnettle (Red deadnettle) 
Purple loosestrife (Purple lythrum) 
Purslane, common 
Quackgrass 
Red sorrel (Sheep sorrel) 
Redroot pigweed (Rough pigweed) 
Redstem filaree (Stork's bill, Crane's bill) 
Reed canarygrass 
Russian thistle (Tumbleweed) 
Ryegrass, annual (Italian ryegrass) 
Salsify (Goatsbeard) 
Scotch broom 
Shepherd's-purse 
Smartweeds 
Sowthistle, annual and perennial 
Speedwells 
Spurges (Prostrate spurges) 
St. Johnswort, common (Goatweed, Klamathweed) 
Stinging nettle 
Tansy ragwort 
Tumblemustard (Jim Hill mustard) 
Velvetgrass (Common velvetgrass) 
Velvetleaf 
Water primrose 
Waterhemlock, western 
Yellow nutsedge 



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Caption: Barnyardgrass
Photo by: J.A. Kropf
  
Weeds : Barnyardgrass : Echinochloa crus-galli
(revision date: 8/13/2015)

Family: Poaceae (Graminae)
Cycle: Summer annual
Plant Type: Grass

Biology
Barnyardgrass grows in clumps up to five feet tall. Leaf blades are smooth, flat, and broad (about 1/2 inch or more) with a pointed tip. The leaf sheaths are smooth to sparsely hairy and may be tinged reddish or purplish. Barnyardgrass leaves are unique among our weedy grasses, in that they have no ligule (neither membranes nor hairs) at the point where the leaf blade joins the leaf sheath. Stems are normally flattened. Seeds are born in panicles that are broadly triangular in outline, with crowded "branches" that are somewhat prickly in appearance. Seedheads may be green to purplish in color.
Habitat
Barnyardgrass is a widespread weed in cultivated areas including irrigated crops and gardens, along ditch banks, and in waste places. In turf, it is often a problem on borders with low maintenance areas. Barnyardgrass may be a contaminant in bird seed. It is most frequently found in wet spots, earning it another common name of "watergrass".

Management Options

Non-Chemical Management
  • Reduce weed establishment by maintaining a healthy planting or turf area to provide competition.
  • Cultivation (rototilling or hoeing) will effectively eliminate plants.
  • Reduce weed infestation by handpulling weeds.
  • Careful digging is useful to manage weed populations. However, digging can carry undesirable weed seed to the surface and foster further germination.
Select non-chemical management options as your first choice!

Chemical Management

Read the label for application timing of the products listed. Glyphosate and glufosinate products should be applied as spot treatments only! NOTE: Some ingredients listed here are only available in combination. Read the label carefully on combination products to make sure the product is suitable for your specific situation.

Landscape areas
  • oryzalin
  • glufosinate
  • products containing benefin
  • trifluralin
  • products containing diquat
  • sethoxydim
  • fluazifop
Turf areas
    Bare ground areas
    • products containing diquat
    Images

    + Show larger images

     
    Caption: Barnyardgrass
    Photo by: J.A. Kropf
    Caption: Barnyardgrass line drawing
    Photo by: Ciba Giegy
    Caption: Base of barnyardgrass leaf blade: no ligule
    Photo by: R. Parker
    Caption: Barnyardgrass lower stem
    Photo by: J.A. Kropf
    Caption: Barnyardgrass panicle
    Photo by: T. W. Miller
    Caption: Barnyardgrass spikelets
    Photo by: T. W. Miller